EP3356779A1 - Druck-messvorrichtung - Google Patents
Druck-messvorrichtungInfo
- Publication number
- EP3356779A1 EP3356779A1 EP16781073.8A EP16781073A EP3356779A1 EP 3356779 A1 EP3356779 A1 EP 3356779A1 EP 16781073 A EP16781073 A EP 16781073A EP 3356779 A1 EP3356779 A1 EP 3356779A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring device
- head
- pressure
- main body
- transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
- G01L11/02—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/003—Fluidic connecting means using a detachable interface or adapter between the process medium and the pressure gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/142—Multiple part housings
- G01L19/143—Two part housings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/147—Details about the mounting of the sensor to support or covering means
Definitions
- the invention relates to a pressure-measuring device for implementing a mechanical or hydraulic pressurization in a measurement signal and for forwarding the measurement signal to a remote evaluation unit.
- the object of the present invention is to provide a simple and robust pressure gauge device which is incorporated in US Pat a potentially explosive atmosphere without risk.
- the pressure-measuring device for implementing a mechanical or hydraulic pressurization in a measurement signal and for forwarding the measurement signal to a remote evaluation unit is characterized by a transmitter head which is arranged on a measuring device head of the pressure-measuring device and the first optical fiber with a light source is to be connected, a receiver head, which is arranged on the measuring device head of the pressure-measuring device and for receiving the from the transmitter head via a light path in the
- Meter head emitted light is arranged opposite the transmitter head and is to be connected via a second optical fiber to the evaluation unit, and a measuring member which is slidably mounted in a mechanical or hydraulic pressurization in the light path between the transmitter head and the receiver head to the measuring device head, wherein the measurement signal to evaluate the strokes of a machine or a pump and / or to determine the frequency of the pressurization, ie the strokes per unit time, a machine or a pump is.
- Pressure measuring device works without electricity and can therefore be in potentially explosive atmosphere
- the pressure-measuring device according to the invention operates independently of position and by movement of the machine housing, z. B. on ships, not impaired in their function.
- the pressure-measuring device is characterized in that the measuring member comprises a plunger which is connected to a membrane which is exposed to the pressurization.
- Pressure measuring device operates stably even under rough conversion conditions.
- this pressure-measuring device can be advantageously set to mechanical or hydraulic pulsations derer pressure application of the pressure measuring device according to the invention to 0.5 to about 5 pulses per minute now n.
- the pressure measuring device according to the invention is characterized that the plunger is biased by a compression spring against the pressure on the membrane in a zero position. Since the compression spring determines the pressure value at which the membrane is deflected effectively, the value can easily be adjusted simply by selecting the spring constant at which the membrane is deflected.
- the pressure-measuring device according to the invention is characterized in that the penetration depth of the measuring member is adjustable in the light path, wherein the pressure-measuring device according to the invention can be set to individual devices in an advantageous manner.
- the pressure-measuring device according to the invention is characterized in that for adjusting the penetration depth of the measuring element, the pressure measuring device comprises a main body on which the measuring device head is mounted displaceably and lockably, whereby the adjustment of the pressure-measuring device according to the invention carried out in an advantageous manner can be.
- the pressure-measuring device is characterized in that the fastening device comprises an adapter head connected to the main body, which has a connection nipple for attachment to the machine housing. This advantageously achieves that only the adapter head needs to be replaced in order to adapt the measuring device of the invention to a specific device.
- the pressure-measuring device according to the invention is characterized in that between the adapter head and the main body and between the adapter head and the machine housing each threaded connection is provided, whereby a simple and secure connection between these parts of the pressure measuring device according to the invention is achieved.
- the pressure measuring device according to the invention is characterized in that the membrane is provided as a seal between the adapter head and the main body, whereby the membrane in an advantageous manner not only as part of the measuring system but also for sealing the pressure-measuring device according to the invention outside serves.
- the pressure-measuring device according to the invention is characterized in that as an additional seal between the adapter head and the main body, an O-ring is provided on the main body.
- the O-ring provides a simple and advantageous further sealing of the pressure-measuring device according to the invention to the outside.
- FIG. 1 shows a section through the pressure-measuring device according to the invention.
- the pressure measuring device comprises an adapter head 1 for mounting the pressure measuring device to a machine housing, a main body 2 to which the adapter head 1 is attached, and a sensor head 3 to be connected to the main body and to which a transmitter head 4 and a Receiver head 5 is attached.
- connection nipple 6 terminates on the one hand in a connection nipple 6 with an external thread 7 and on the other hand connected by an internal thread 8 with an external thread 7 of the main body 2.
- the connection nipple 6 is screwed with its external thread 7 in a screw opening of a machine housing, wherein a passage 8 of the connection nipple 6 with the interior of the
- Machine housing is hydraulically connected.
- a membrane 9 is provided made of an elastomer, which is accessible from the passage 8 of the connecting nipple 6.
- the membrane 9 serves as a first seal between the adapter head 1 and the main body 2.
- the membrane 9 is held by the membrane plate 10 in position.
- the diaphragm 9 is pressed by a compression spring 11 in the direction of the connection nipple 6.
- the compression spring 11 is held by a spring housing 12 in position. This results in the zero position de membrane 9.
- As a second seal between the adapter head 1 and the main body 2 is an O-ring 13 on the main body 2, wherein the O-ring 13 is disposed between the adapter head 1 and the main body 2.
- the movement of the membrane plate 10 is transmitted through a screwed into the membrane plate 10 ram 14 made of stainless steel in the sensor head 3. So that the plunger 14 is mounted well slidable within the main body 2, it is guided by two bushes 15, 16.
- the sensor head 3 is slidably mounted on the main body 2 by a final extension 17 of the main body 2 is guided in a receiving bore 18 of the sensor head.
- the sensor head 3 can be locked on the main body 2 by a screwed into a threaded bore 19 in the sensor head 3 locking screw 20 cooperates with a recess in the form of a detent 21.
- the sensor head 3 has a measuring bore 22 into which the plunger 14 protrudes.
- the length of the shock 14 is dimensioned so that it does not obscure two diametrically opposite, radially extending to the sensor head 3 threaded holes 23, 24 in zero position.
- threaded holes 23, 24 of the transmitter head 4 and the receiver head 5 are screwed for the fiber optics.
- the transmitter head 4 is connected to an optical fiber 25, which is arranged so that light is introduced into the measuring bore 22 of the sensor head 3.
- the optical fiber 25 introduces infrared light of an IR signal source precisely positioned through the transmitter head 4 into the measuring bore 22.
- the receiver head 5 serves as a light receiver and transmits the infrared signal from the transmitter head 4 via an optical fiber 26 for measurement evaluation in a remote evaluation unit.
- the optical fibers 25, 26 are thin cables of approximately 2.2 mm outer diameter and consist of a light-conducting inner core, for example made of polymethacrylate with a black polyethylene sheath. If, according to the invention, the device is fastened by means of the external thread 7 to a machine housing filled with hydraulic medium, hydraulic or mechanical plunger movements cause the diaphragm 9 and the plunger 14 to be deflected by 1 to 2 mm in the rhythm of these movements. To prepare for the use of the device according to the invention, the sensor head 3 is displaced on the main body 2 with the locking screw 20 loosened until the plunger 14 interrupts the light path in the measuring bore 22 in the rhythm of the movements. Thereafter, the locking screw 20 is tightened, and thus the device according to the invention is ready for operation.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202015105132.8U DE202015105132U1 (de) | 2015-09-29 | 2015-09-29 | Druck-Messvorrichtung |
PCT/EP2016/073259 WO2017055451A1 (de) | 2015-09-29 | 2016-09-29 | Druck-messvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3356779A1 true EP3356779A1 (de) | 2018-08-08 |
Family
ID=54867352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16781073.8A Pending EP3356779A1 (de) | 2015-09-29 | 2016-09-29 | Druck-messvorrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US10801907B2 (de) |
EP (1) | EP3356779A1 (de) |
CN (1) | CN108431569A (de) |
DE (1) | DE202015105132U1 (de) |
WO (1) | WO2017055451A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202018106088U1 (de) | 2018-10-24 | 2018-11-16 | Anni Hjorth Blum | Misch- und Dosiervorrichtung zum Mischen und Dosieren von flüssigen Chemikalien |
GB2594731B (en) * | 2020-05-06 | 2022-11-30 | Cejn Ab | Pulse counter |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT967839B (it) * | 1972-09-25 | 1974-03-11 | Checchetti M | Dispositivo per rilevare elettro nicamente variazioni di pressione in un fluido |
GB1501857A (en) * | 1975-04-25 | 1978-02-22 | Marston Excelsior Ltd | Fluid pressure transducers |
US4189724A (en) * | 1978-02-24 | 1980-02-19 | Donaldson Company, Inc. | Electric restriction indicator with a contactless switch device for indicating a restriction in filter elements |
WO1981002062A1 (en) * | 1980-01-08 | 1981-07-23 | Varian Techtron Pty Ltd | Fluid pressure monitoring device |
SU1483297A1 (ru) * | 1987-06-04 | 1989-05-30 | Отдел Теплофизики Ан Узсср | Способ измерени давлени и устройство дл его осуществлени |
CN2101225U (zh) * | 1991-01-15 | 1992-04-08 | 张秉坚 | 一种压力测示器 |
US5725359A (en) * | 1996-10-16 | 1998-03-10 | B&S Plastics, Inc. | Pool pump controller |
JPH10300535A (ja) * | 1997-04-30 | 1998-11-13 | Kawamoto Seisakusho:Kk | 流量圧力検出装置 |
US6125218A (en) * | 1998-03-19 | 2000-09-26 | Humphrey; Ashley C. | Fiber optic pressure sensitive optical switch and apparatus incorporating same |
US7255009B1 (en) | 2006-03-27 | 2007-08-14 | Micro Pneumatic Logic, Inc. | Variable analog output pressure switch |
DE102006035230A1 (de) * | 2006-07-26 | 2008-01-31 | Endress + Hauser Gmbh + Co. Kg | Druckmessaufnehmer |
DE102010021646A1 (de) | 2010-05-26 | 2011-12-01 | Jung Pumpen Gmbh | Opto-mechanischer Druckschalter |
WO2012115740A2 (en) * | 2011-02-21 | 2012-08-30 | Emerson Electric Co. | Valves, pressure sensing devices, and controllers for heating appliances |
-
2015
- 2015-09-29 DE DE202015105132.8U patent/DE202015105132U1/de not_active Expired - Lifetime
-
2016
- 2016-09-29 US US15/764,847 patent/US10801907B2/en active Active
- 2016-09-29 CN CN201680056951.8A patent/CN108431569A/zh active Pending
- 2016-09-29 EP EP16781073.8A patent/EP3356779A1/de active Pending
- 2016-09-29 WO PCT/EP2016/073259 patent/WO2017055451A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2017055451A1 (de) | 2017-04-06 |
CN108431569A (zh) | 2018-08-21 |
US10801907B2 (en) | 2020-10-13 |
DE202015105132U1 (de) | 2015-12-07 |
US20180238758A1 (en) | 2018-08-23 |
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Legal Events
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19U | Interruption of proceedings before grant |
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19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 20240201 |